Machine foe powdering plates



3 Sheets-Sheet 1. B. BAUGH. MACHINE FOR POWDERING PLATES, &c.

(No Model.)

,786. Patented May 15, 1894'.

Y"! mmouu. Lrmoalumna COMPANY.

3 Sheets-Sheet 2.

(N6 Model.)

B. BAUGH. "MACHINE FOR POWDERING PLATES, 650.

No. 519,786. Patented May 15,1894.

(No Model.) 3 Shets-Sheet s.

B. BA-UGH. MACHINE FOR POWDEBING PLATES,

No. 519,786. Patented May 15,1894.

THE NAIIONAL Lnuoemmme COMPANY.

wAsnmawm 0. c.

UNITED STATES PATENT OFFICE.

BENJAMIN BAUGH, -OF BIRMINGHAM, ENGLAND.

MACHINE FOR POWDERING PLATES, 84.0.

SPECIFICATION forming part of Letters Patent No. 519,786, dated May 15,1894.

Application filed March 8, 1893- Serial No. 465.092- (No model.)

To all whom it may concern:

Be it known that I, BENJAMIN BAUGH, a subject of the Queen of GreatBritain, and a resident of Birmingham, England, temporarily residing atEll-wood City, in the county of Lawrence and State of Perms lvania, haveinvented certain new and useful Improvements in Machines for Powderin gPlates and other Surfaces, of which the following is a specification.

y invention relates to machines for powdering with frit the preparedsurfaces of plates which are afterward subjected to a firing within afurnace whereby the frit is fused into a superficial coating of enamelin the manufacturing of articles such as signs and designs with enameledsurfaces.

My invent-ion embraces among other things the provision of supplementaltruck-frames for the carriage which carries and sifts the powder uponthe plates, whereby it is caused to have a steady and firm movementuponits track rails. This provision also constitutes intermediatesliding bearings for a long power transmitting shaft connecting saidcarriage, whereby said shaft is firmly supported between its journalbearings in its function of traversing the carriage. While thecarriagehopperhasa back and forth traversing move ment in the operationof sifting the powder, the roll-device for feeding the powder from thehopper, must have a continuous rotation in the same direction, and forefiecting this operation of the feed-roll, I provide a shiftingframeloosely mounted upon the journal of said feed-roll and carryingatrain of gear adapted to maintain constant engagement with said rollandtobe alternatelyengaged with carriage connecting gearand to maintainsuch alternate engagement by the action of gravity brought into functionby the swinging movement of said gear carrying frame. It is also important that the vibratory movement of the sifter should be free fromsudden jerks and for this purpose I provide a construction which admitsof the use of an endless cord operated from the feed-roll, and themounting of the sieve directly upon pulleys which are driven by saidendless cord in a way to give the sieve a steady and regular movementupon pulleys, the axis pins of which have a fixed relation to the hopperof the feed-device.

The accompanying drawings illustrate my improved powdering machine, andin connection with them Ishall particularly designate the subject matterof my invention in the claims concluding this specification.

Referring to the drawings: Figure 1 represents a front elevation of apowdering machine embracing my invention. Fig. 2 shows in elevation theright end of the machine. Fig. 3 is a vertical section of the same onthe line x-oc of Fig. 4. Fig. 4c is a top view of the machine. Figs. 5and 6 show detail views of the carriage sifting operating connections.Figs. 7 and 8 show detail views of the carriage moving connections. Fig.9is a vertical cross section of the hopper sifting device; and Fig. 10is a horizontal section of the same taken on the line 0-D of Fig. 9.Figs. 11, 12 and 13 show respectively side, top and end Views of thesifter and its supporting and operating devices; and Fig. 14 is an endelevation of the same; and Fig. 15 is a view of the shifting rollertrain device of the carriage, the shifting frame being of cog gear.

A suitable level bed frame or table 1 supports the plates or articles,to be powdered with their faces or surfaces upward; and rising from thistable at each end are standards 2 preferably of inverted L-shape, whichoverhang the table crosswise and support and carry the operatingmechanism in proper reciprocating relation over said plates. This tableis comparatively long and narrow for the convenient handling and placingof the plates close together. Supported upon the horizontal arms of thestandards are two longitudinal I-beams 8 and 9 which are tied togetherby nutted rods 14. ,Fig. 4 and which extend the length of the table toform ways for a carriage, from which latter the distributing hopper forthe powder, depends, as I shall presently state.

At the front side of the machine and outside of and parallel with therail 9 and about on a level therewith, a shaft 10 is mounted in journalboxes 2 and has a square or X, cross section between its journals. Thisshaft is provided at one end with contiguous pulleys 5, 6, and 7, ofwhich the middle one 6 is loose thereon, and these pulleys are drivenfrom a continuouslydriven pulley t Fig. 1 in away toreverse the motionof the shaft fora purpose which I will presently state. At the innerside of the rail 8 and parallel therewith, a toothed rack '52 issupported upon the standard arms and by intermediate brackets 80 on therail 8.

The carriage which carries the powdering mechanism consists of twoframes 11 one outside of eachrail, extending below and rising above it,and supported upon the rails by flanged wheels 15, there being'a pairofSUYch wheels connected by an axle 12, at each end of said frames. Oneof these axles 12 has keyedupon its front end a worm wheel 26,

see Figs. 1, 7, and 8, which engages a worm gear 27 on the shaft wherebyto give a positive rotation to the said carriage axle 12. lhis worm gear27 is rotated by the shaft 10,

and is moved longitudinally thereon, with the carriage, by a box28 openat'itstop, and

secured'by a bracket to the front carriage side 11, the ends of the boxembracing the ends of the worm, so as to slide it on the shaft eitherway the carriage may be moved. A gear wheel'53 also geared uponthis'ca'rriage axle, engages the rack'52 and thus the carriage receivesits reciprocating motion from end to end of the machine from the ro-.

tation of the shaft "10. For the purpose of r the carriage 1s moved backgiving a long wheel-base and asteady motion to the carriage, I provide atruck attachment at each side of thecarriage. Each truck consists of twopairs of flanged wheels 24, the axle 16 of which, are mounted in endplates 22, tied together by n'utted rods18. Brack ets 25 extend from thefront truck plates and partially encircle and support the shaft 10.Hooks 30 loosely connecting the carriage axles,

engage the truck axles and thereby couple 1 the trucks to the carriage.These coupling hooks can be disengaged for any necessary manipulation ofthe carriage.

The sifting device is attached to and de pends from the lower side ofthe carriage frames, and the provision for evenly distributing thepowdered frit upon the plates as I 7 nd forth, l'will now describe.

Fixed to and depending from the carriage frames 11 transversely beneaththe rails, isa

horizontal rectangular frame 41having top doors 42 which may be hingedto open upward between the carriage frames, for the introductionof thepowdered enamel into the hopper, as seen in Fig. 9. An oblong hopper 41depends from this frame and opens into an oblong box 43, the bottom ofwhich is open and is fitted with a movable sifter; while the bottomopening of the hopper is fittedwith a roll 44, preferably of metal, therotation of which causes the powder to descend-between it and theedge'or a'pla-te 45 fitted horizontally within theb'ox which contains thesifter; This plate is madeadju'stablewithrespect-to the roll bytwoscrews 46, Figsf4' and9,wliich carriage, as seen in Figs. 5 and 6.

Projecting from the front carriage plate is a divided bracket 32constructed to form a keeper for a worm gear 33 upon the shaft 10, androtated by and sliding upon it with the Below the shaft 10 and at rightangles to it, a stud 35 projects preferably from abearingin the frontcarriage bracket 32and has a worm wheel 34, which engages with the wormgear 33; while a spur gear 36 on the 'endof this stud engages the sifteroperating train of gear, which I will now describe in connection withthe sifter for depositing the powdered frit upon the plates.

The hopper box 43 extends down to near the plates to be powdered andwithin its open bottom I mount the sifter frame 47 so as to have alimited shaking movement Within said box." Extending from each end ofthe box is an inverted T-shaped bracket 6O the ends of the arms curvingunder the box and at each end'carryin'g asmall pulley which has a pin 7Oset'eccentrically on its upper face which engages a 8101523 on eachcorner of the sifter frame as seen in Figs. 11, 1'2 and 13, and abovethe T-arms the bracket has two guide pulleys 17 at the front end of thebox. A 1101- low stud 48, Figs. 3, 10 and 15 is fastened to the frontend of the box, through which the journal of the roll 44 passes and hasa pinion 39 and a pulley 50, so that an endless cord 31 passing over thepulley 50 down under the guide pulleys 17 and around the four sifterpulleys will, by-the rotation of the roll 44, cause a continuous gentlehorizontal rotary motionof the sifter to deliver the powdered fritevenly on the plates. Mounted pivotally upon this hollow stud 48 is ap1ate49 Figs. 3, 4 and 15 of triangular form which stands upward and hasa' slight lateral swingingmovement for a "purpose WlllOll'I willpresently state. From the outer face of this plate 49 studs projectupon'which are fitted t'hepinions 37, 38,39, and 40. The pinion 37engages the pinion 38 which engages the pinion 39 upon the hopper roll44, and this roll pinion engages the larger pinion'40, when the frame 49swings to the right as in Fig. 1.

Referring to Fig. 1 it will be seen. that the spur gear 36, which isdriven from the shaft 10, is engaged with the pinion '37 and causes thetrain of gear to rotate in the direction of the arrows and the roll 44to rotate so as to feed the powder down to the regulating plate as seenin Fig.9, asthe carriage is moving in onedirection'. The swingingmovement to the left of the plate 49 upon its hollow stud 48 willdisengage the pinion 37 from pinion 36 and engage the larger pinion 40with said pinion 36, but this is only done when the movement of thecarriage is reversed'in order that the latter pinion 'will continue to'rotate' the roll 44 in the same direction. Thus when the carriage movesin one direction motion is transmitted through the-train of gear 36,37,38, and 39 rethe a'rrowin Fig. 9. When the carriage moves in theother direction motion istransmitted to the roll through the gear 36,40and 39, and the roll still revolves in the same direction. This isimportant as the even distribution of the powdered frit depends upon thecontinuous flow between the roll and the plate 45. The provision forshifting the plate 49 consists of a rod 62 fastened in bearings 63 -onthe side of the hopper 41 having a crank 61 which is jointed by a link61* to the plate 49 near its supporting stud 48, as seen in Figs. 3 and15, the other end of said rod having a handle 64, Figs. 2 and 3, bywhich the attendant operates it preferably at the rear side of themachine, so as to vibrate its crank 61 and push the triangular plate 49over to engage its pinion 37 with the carriage pinion 36 as seen in Fig.1; or pull the said plate 49 over to engage its pinion with the carriagepinion.

It is important to notice that the pinions 37 and 40 are so arranged onthe opposite edges of the plate 49 that when either is engaged with thecarriage pinion, the upper end of this plate will stand to one side ofthe vertical line of gravity and thereby automatically hold itself inengagement with either of its pinions 37 or 40. For this purpose theaxis of the plate bearing and the axis of carriage pinion are verticallycoincident, as seen in Fig. 15.

The band pulley 4 is driven by any suitable motor, and the shaft pulleys5 and 7 are driven by means of a straight belt upon one and a crossedbelt upon the other. When the one belt is running the shaft 10 in onedirection the other is running upon the loose pulley, and when at eitherend of the track the carriage shifts the belts by striking stops 91, 92,

on a shifter rod 90, the direction of revolution in the shaft isreversed and the movement of the machine reversed. For this purpose theshifter rod 90 has fingers seen in Fig, 1 to engage the belts and therod is arranged the length of the machine so that its stops will,

by contact with the carriage brackets 25 be' shifted as stated.

Assuming the carriage to be at thelimit of its movement in onedirection, the hopper supplied with a quantity of frit and the table 1covered with the prepared plates, the ma chine is started. The rotationof the shaft 10 rotates the worm gear 27, which turns the worm wheel 26,the shaft of which, by its spur gear 53, engages the rack 52 and movesthe carriage upon its rails. At the same time the worm gear 33 on theshaft 10 transmits motion toits worm wheel 34 Figs. 3 and 6and throughthe pinion 36 and the train of gear,

motion is given to the roll 44 and the powder.

is caused to descend into the sifter. The hopper pulley is rotated bythe roll 44, and with it rotates the sifter pulleys 60, causing thesifter to have a rotary shaking movement in a horizontal plane to siftand deliver the powder evenly upon the surface of the articles upon thetable. When the carriage has train of gear with the carriage pinion 36,and

the rotation of the feeding roll is continued in the same directionduring the return movement of the carriage. In effecting this change inthe direction of the movement of the carriage, any suitable forms ofreversing gear may be substituted for the crossedbelts and pulleys.

The provision of the supplemental trucks and their sliding connectionwith the power transmitting shaft is important in forming a slidingsupport for the long shaft to prevent its sagging and vibration underthe sliding movement of the carriage, the hopper feed-device whereof isoperated by a sliding connection with saidshaft. These trucks for thispurpose form intermediate bearings for the shaft to keep it steady; andthey also serve to steady the movementof the carriage and thereby renderthe feed from its hopper uniform. In furtherance of this object I alsoprovide for operating the sifter by an endless cord and pulleyconnections with the feedroll, whereby the sieve is caused to have asteady movement as distinguished from the jerking movement of a crankaction, which tends to produce an unequal deposit of powder upon theplate; whereas a perfectly smooth and equal distribution of the powderupon the surface is an important requirement in the work. It is for thispurpose thatlprovide a steady movement of the carriage, its feed-deviceand its sitter. In such provision the'sifter is supported directly uponthe pulleys which are operated by an endless cord from the feed roll.

Having described apowdering-machine embodying in preferred form theseveral features of my present invention in combination, what Iseparately claim, and desire to secure by Letters Patent, is-

1. In a machine for powdering surfaces, the independent truck-frames 22,22, each having a bearer-arm 25 projecting from one end, combined withthe track-rails, the carriage having the hopper and the powertransmitting shaft, the said truck bearing-arms supporting and movingalong said shaft to support it on each side of and independent of thecarriage for the purpose stated.

2. In a machine for powderingsurfaces, the combination of a horizontalpower transmitting shaft, track-rails, and a reciprocating carriagethereon, and a hopper having a feedroll and sifting devices, of a plateor frame loosely mounted on the journal of said feedroll having a trainof gear arranged for con stant engagement with a pinion on said feedrolland suitable gear connecting the shaft and carriage arranged relativelywith the train gear for alternate engagement there IIO with by theswinging movement of said plate, substantially as described.

3. The combination, with a reciprocating carriage having a hopper, ashaft parallel with the movement of said carriage, suitable gearingconnecting said shaft and carriage, and a feed-roll having a pinion, ofa swingframe loosely on the journal of said feed-roll having a train ofgear arranged in such relation to said carriage and roll-gear, that twoof the train pinions will be in constant "engagement with said roll-gearand two of said train pinions will be in alternate engagement with thecarriage connecting gear according as said frame is swung upon itsjournal at 'the end of the reciprocating movement of the carriage, forthe purpose stated. g

4. In a machine for powdering surfaces, the combination of thereciprocating carriage having a hopper and a feeding-roll, a powertransmitting shaft parallel with the movement of said carriage, suitablegear for engaging said carriage and shaft, and a pinion on saidfeed-roll, with a plate or frame 49 loosely mounted on the shaft of saidfeed-roll and having a train of gear arranged in coni stant engagementwith said feed-roll pinion, I the said plate arranged to be swung toalternately engage its train of gear with the said carriage gear and tomaintain such engagement by gravity due to the position of the plate,substantially as described. I

. 5. The combination in a machine for powdering surfaces, of a table forsupporting the 1 article to be powdered, with a horizontal traversingcarriage supported above said tab1e,a l

hopper depending from said carriage, ajfeedfl roll 44 therein having thepinion 39 and pulley 50, a Sifter 47 supported bythe hopper-,' and meansfor operating said roll and sifter, consisting of a rotating. shaft 10,a worm gear 33 adapted to have a sliding movement thereon with saidcarriage, a worm wheel 34 on the latter engagin said shaft worm, apinion 36 operated by said worm pulley 34 a shifting; plate 49 havingthe pinions 37, 38, 39 and 40, pulleys 60 on said hopper eccentricallycon-- nected to said sitter, and an endless cord con- 'nec'ti'ng saidsitter and roll pulleys, substan tially as described.

'6. In a'inachine for powdering surfaces, the

combination of a horizontally reciprocating carriage, a hopper dependingtherefrom having a feed-roll and pulleys supported in fixed relation tosaid hopper, with an endless cord arranged toconnect said pulleys withthe feed-roll, a sitter mounted directly upon and operated by saidpulleys and mechanism for operating said feed-roll, substantially asdescribed. v7

7. In a machine for powdering surfaces, the combination of ahorizontally reciprocating carriage, a hopper depending therefrom havingeyedbrackets23 at each corner, inverted T-shaped brackets 60' at eachend, and a feed-roll for said hopper, with a sifter and means forsupporting and operating the same consisting of the horizontal pulleysmounted in the brackets 60 and having eccentric pins engaging thebrackets 23,the vertical pulleys 17, 17, mounted in the bracket 60, thepulley 50 on the feed-roll, an endless cord connecting said pulleys, andsuitable means for connecting said feed-roll and carriage for operatingthe endless cord, substantially as described.

8-. In a machine for powdering plates, the combination with the powertransmitting shaft 10, a reciprocating carriage, having a hopper and afeed device, and means for opera ting said carriage from said shaft, ofa device for operating the feed-roll in the same direction "during thereciprocating movement of saidcarriage, consisting of the worm-gear 33,sliding on said shaft, the pinion 36, on the carriage engaging saidshaft worm, the pinion 39 on the feed-roll, and the plate 49 looselymounted on the journal of said feed-rolland having the gear wheels 37,38, and 40, the said gear wheels '38 and 40 being in constant ongagementwith the roll pinion and the said gear wheels 37 and i0, being arrangedfor alternate engagement with said carriage pinion by theshifting-action of said plate, substantially as described.

In testimony whereof I have hereunto signed this specification in thepresence of witnesses.

BENJAMIN BAUGH.

Witnesses: V Y

MCNEILL, H. H. ROELOFS.

